Art is the human language of the nervous plane, intended to express and communicate the Divine, who in the domain of sensation manifests as beauty.

The purpose of art is therefore to give those for whom it is meant a freer and more perfect communion with the Supreme Reality. The first contact with this Supreme Reality expresses itself in our consciousness by a flowering of the being in a plenitude of vast and peaceful delight. Each time that art can give the spectator this contact with the infinite, however fleetingly, it fulfils its aim; it has shown itself worthy of its mission.
Thus no art which has for many centuries moved and delighted a people can be dismissed, since it has at least partially fulfilled its mission—to be the powerful and more or less perfect utterance of that which is to be expressed.
[CWM2, 2:12324]

What Is True Art?

True art is the beautiful, but in close intimacy with the universal movement. The greatest nations and the most cultured races have always considered art as a part of life and made it subservient to life. Art was like that in Japan in its best moments; it was like that in all the best moments in the history of art. But most artists are like parasites growing on the margin of life; they do not seem to know that art should be the expression of the Divine in life and through life. In everything, everywhere, in all relations truth must be brought out in its all-embracing rhythm and every movement of life should be an expression of beauty and harmony. Skill is not art, talent is not art. Art is a living harmony and beauty that must be expressed in all the movements of existence. This manifestation of beauty and harmony is part of the Divine realisation upon earth, perhaps even its greatest part.
[CWM2, 3:10809]

Japanese Houses: Expression of Artistic Beauty

A Japanese house is a wonderful artistic whole; always the right thing is there in the right place, nothing wrongly set, nothing too much, nothing too little. Everything is just as it needed to be, and the house itself blends marvellously with the surrounding nature. In India, too, painting and sculpture and architecture were one integral beauty, one single movement of adoration of the Divine.

The Process of True Art

Art is nothing less in its fundamental truth than the aspect of beauty of the Divine manifestation. Perhaps, looking from this standpoint, there will be found very few true artists; but still there are some and these can very well be considered as Yogis. For like a Yogi an artist goes into deep contemplation to await and receive his inspiration. To create something truly beautiful, he has first to see it within, to realise it as a whole in his inner consciousness; only when so found, seen, held within, can he execute it outwardly; he creates according to this greater inner vision. This too is a kind of yogic discipline, for by it he enters into intimate communion with the inner worlds. A man like Leonardo da Vinci was a Yogi and nothing else. And he was, if not the greatest, at least one of the greatest painters,— although his art did not stop at painting alone.
[CWM2, 3:110]

Art and Yoga

The discipline of Art has at its centre the same principle as the discipline of Yoga. In both the aim is to become more and more conscious; in both you have to learn to see and feel something that is beyond the ordinary vision and feeling, to go within and bring out from there deeper things. Painters have to follow a discipline for the growth of the consciousness of their eyes, which in itself is almost a Yoga.
[CWM2, 3:105]
 
Is it possible for a Yogi to become an artist or can an artist be a Yogi? What is the relation of Art to Yoga?
The two are not so antagonistic as you seem to think. There is nothing to prevent a Yogi from being an artist or an artist from being a Yogi. But when you are in Yoga, there is a profound change in the values of things, of Art as of everything else; you begin to look at Art from a very different standpoint. It is no longer the one supreme all-engrossing thing for you, no longer an end in itself. Art is a means, not an end; it is a means of expression. And the artist then ceases too to believe that the whole world turns round what he is doing or that his work is the most important thing that has ever been done. His personality counts no longer; he is an agent, a channel, his art a means of expressing his relations with the Divine. He uses it for that purpose as he might have used any other means that were part of the powers of his nature.
[CWM2, 3: 104]

Modern Art and the Art of the Future

Modern art is an experiment, still very clumsy, to express something other than the simple physical appearance. The idea is good—but naturally the value of the expression depends entirely on the value of that which wants to express itself.
[CWM2, 12:236]
 
Why are today’s painters not as good as those of the days of Leonardo da Vinci?
Because human evolution goes in spirals. I have explained this. I said that art had become an altogether mercenary affair, obscure and ignorant, from the beginning of the last century till its middle. It had become something very commercial and quite remote from the true sense of art. And so, naturally, the artistic spirit does not come! It followed bad forms, yet it tried to manifest to counteract the degradation of taste which prevailed. But naturally, as with every movement of Nature in man, some having gone to one extreme, others went to the other extreme; and as these made a sort of servile copy of life—not even that, in those days it was called “a photographic view” of things, but now one can no longer say that, for photography has progressed so much that it would be doing it an injustice to say this, wouldn’t it? Photography has become artistic; so a picture cannot be criticised by calling it photographic; nor can one call it “realistic” any longer, for there is a realistic painting which is not at all like that—but it was conventional, artificial and without any true life, so the reaction was to the very opposite, and naturally to another absurdity: “art” was no longer to express physical life but mental life or vital life. And so came all the schools, like the Cubists and others, who created from their head. But in art it is not the head that dominates, it is the feeling for beauty. And they produced absurd and ridiculous and frightful things. Now they have gone farther still, but that, that is due to the wars—with every war there descends upon earth a world in decomposition which produces a sort of chaos. And some, of course, find all this very beautiful and admire it very much.
I understand what they want to do, I understand it very well, but I cannot say that I find they do it well. All I can say is that they are trying.
But it is perhaps (with all its horror, from a certain point of view), it is perhaps better than what was produced in that age of extreme and practical philistinism: the Victorian age or in France the Second Empire. So, one starts from a point where there was a harmony and describes a curve, and with this curve one goes completely out of this harmony and may enter into a total darkness; and then one climbs up, and when one finds oneself in line with the old realisation of art, one becomes aware of the truth there was in this realisation, but with the necessity of expressing something more complete and more conscious. But in describing the circle one forgets that art is the expression of forms and one tries to express ideas and feelings with a minimum of forms. That gives what we have, what you may see (I believe we have reproductions of the most modern painters in the University Library). But if one goes a little farther still, this idea and these feelings they wish to express and express very clumsily—if one returns to the same point of the spiral (only a little higher), one will discover that it is the embryo of a new art which will be an art of beauty and will express not only material life but will also try to express its soul.
[CWM2, 5: 33233]

Guidance to a Young Artist:

I have done this picture without anybody’s help. How is it? Will I be able to learn?
To learn means months and months of study before any picture can be done; studies from nature, drawing first for a long time, painting only after.
 If you are ready to study hard and regularly, then you can begin, otherwise it is better not to try.
[CWM2, 12:234]
Painting: Expression of Beauty and Emotion
Painting is not done to copy Nature, but to express an impression, a feeling, an emotion that we experience on seeing the beauty of Nature. It is this that is interesting and it is this that has to be expressed, and it is because you have the possibility of doing this that I encourage you to paint.
[CWM2, 12:23536]
You must feel what you paint and do it with joy.
Copy many beautiful things, but try even more to catch the emotion, the deeper life of things.
[CWM2, 12:234]